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Finding the Fourth Proportional to 331,726.15, 496,859.86 and 274,147.48

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Solution

The fourth proportional to 331,726.15, 496,859.86 and 274,147.48 is: 410,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,726.15 : 496,859.86 = 274,147.48 : x
  2. Step 2: Convert to fraction form
    331,726.15/496,859.86 = 274,147.48/x
  3. Step 3: Cross multiply
    331,726.15x = 496,859.86 × 274,147.48
  4. Step 4: Simplify right side
    331,726.15x = 136,212,878,532.15
  5. Step 5: Solve for x
    x = 136,212,878,532.15/331,726.15
  6. Step 6: Final answer
    x = 410,618.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.